Hair waving pad



30, 1 2- R. L. EVANS HAIR WAVING PAD Original Filed Jan. 21. 1952 INVENTOR ATTORNEYS Patented Aug. 30, 1932 UNiTEo STATES PATENT OFFICE RALPH L. EVANS, OF NEW YORK) N. 'Y., ASSIGNOR TO ZOTOS CORPORATION, OF NEW YORK, N. Y;, A CORPORATION OF NEW YORK HAIR WAVING PAD REISSUED Original application filed January 21, 1932, Serial No. 587,890. Divided and this application filed May 6,

i932. Serial No. 609,755. a

This invention relates to that class of hair waving in which a so called permanent wave is imparted to a pre-formed tress of hair by subjecting the tress to the action of a heating chemical, such. as calcium oxide, which, when moistened, will of itself generate 'sufiicient heat to impart a permanent wave to the said tress..

My invention comprises a hair waving pad of novel construction, said pad having an outer wrapper, an inner wrapper provided with a foldable flap, an envelope containing a heating chemical, and an inner sheet of absorbent material adapted to be moistened and placed between the flap and envelope for coaction with the heating chemical.

An example of a hair waving pad embodying my invention is represented in the accompanying drawipg in which:

Fig. 1' represents an inside plan view ofwrapped around a woundtress as in use; and

Fig. 4 represents a longitudinal central sec tion through the wrapped pad.

The outer wrapper of the self wavingpad is vdenoted by 1 and is preferably made of non-absorbent material, as for instance pa-- per. The inner wrapper is denoted by 2 and is preferably made of metal foil. This inner wrapper is provided with a foldable flap 3.

An envelope 4 composed of a perforable impervious material, such as metal foil, is attached to the inner face of the inner wrapper 2, which envelope contains a heating chemical, such as calcium oxide in powdered form, which chemical, when moistened, will of itself generate suficient heat to impart a so-called permanent wave to a pre-formed tress when enclosed within the pad.

An inner-removable sheet 5 of absorbent material, such as cotton fabric is arranged.

to be moistened and inserted between the flap 3 and the envelope 4 after the inner face of the envelope 4 and the folded over flap 3 of the inner wrapper have been perforated.

The pressing of the flap back into place will squeeze the moisture from the wetted inner sheet into the envelope containing the heating chemical.

In practice, the tress 6 is wound as usual around a mandrel 7. The tress may be moistened either before or after it is wound, by a suitable waving solution, such for instance as an ammonia solution. The inner face of the impervious envelope 4 containing the hair waving chemical is perforated as shown at 8, and the folded over flap 3 of the inner wrapper may be perforated at the same time as shown at 9. The inner sheet 5 is moistened by water or by a suitable hair waving solution, such as that used for moistening the tress 6.

Either the solution or the self heating chemical within the envelope may be treated to produce the results hereinbefore set forth.

The pad is then wrapped around the preformed tress and is preferably secured in position at the scalp end of the tress by a suitable scalp protecting guard of well known or approved form, such for instance as the self locking guard 10 shown in the accompanying drawing. 7 The outer end of the pad may be secured around the mandrel 7 as for instance by twisting the outer wrapper of the pad around the same. The exothermic actionstarts at once because of the application of moisture by the'wetted inner sheet 5 0f thewpad to the self heating chemical through the perforations in the inner face of the impervious envelope. Heat is then set up within the pad in order to impart a so called permanent wave to the pre-formed tress without requiring application of heat from an outside source. It will be seen that i the outside wrapper of the pad serves to confine the heat to a large extent within the pad the steam generated by the combination 0 the treating solution with the chemical being permitted to escape through the crimped outer end of the outer wrapper.

This application is a division of my application filed J anuarv 21,1932 ena means for permanently waving hair.

formed tress, said pad comprising a non- I absorbent outer wrapper, an impervious in- Her wrapper having a foldable flap, an impervious envelope containing a chemical I 5th ay of May,,1932.

which, when moistened, will generate sufiicie t heat to im art a permanent wave to the tr s, and an a sorbent sheet adapted to be moistened and placed between the flap and envelope, said flap and envelope being perforated before the 'pad is used.

In testimony, that I claim the foregoing as m invention, I-have signed my name this RALPH L. EVANS.

0. 587,890, entitled Method of an 

